90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/*
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* Copyright 2020 Google LLC.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/private/SkColorData.h"
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#include "src/core/SkCanvasPriv.h"
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#include "src/gpu/GrRecordingContextPriv.h"
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#include "src/gpu/SurfaceFillContext.h"
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#include "src/gpu/Swizzle.h"
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namespace skiagm {
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// Size of each clear
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static constexpr int kSize = 64;
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DEF_SIMPLE_GPU_GM_CAN_FAIL(clear_swizzle, rContext, canvas, errorMsg, 6*kSize, 2*kSize) {
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if (rContext->abandoned()) {
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*errorMsg = GM::kErrorMsg_DrawSkippedGpuOnly;
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return DrawResult::kSkip;
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}
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auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(canvas);
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if (!sfc) {
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*errorMsg = GM::kErrorMsg_DrawSkippedGpuOnly;
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return DrawResult::kSkip;
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}
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auto make_offscreen = [&](const SkISize dimensions) {
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skgpu::Swizzle readSwizzle = skgpu::Swizzle::Concat(sfc->readSwizzle(),
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skgpu::Swizzle{"bgra"});
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skgpu::Swizzle writeSwizzle = skgpu::Swizzle::Concat(sfc->readSwizzle(),
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skgpu::Swizzle{"bgra"});
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return rContext->priv().makeSFC(kPremul_SkAlphaType,
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sfc->colorInfo().refColorSpace(),
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dimensions,
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SkBackingFit::kExact,
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sfc->asSurfaceProxy()->backendFormat(),
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/* sample count*/ 1,
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GrMipmapped::kNo,
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sfc->asSurfaceProxy()->isProtected(),
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readSwizzle,
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writeSwizzle,
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kTopLeft_GrSurfaceOrigin,
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SkBudgeted::kYes);
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};
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struct {
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SkIRect rect;
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SkPMColor4f color;
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} clears[] {
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{{ 0, 0, kSize, kSize}, {1, 0, 0, 1}},
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{{kSize, 0, 2*kSize, kSize}, {0, 1, 0, 1}},
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{{ 0, kSize, kSize, 2*kSize}, {0, 0, 1, 1}},
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{{kSize, kSize, 2*kSize, 2*kSize}, {1, 0, 1, 1}},
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};
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// onscreen for reference
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for (const auto& c : clears) {
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sfc->clear(c.rect, c.color);
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}
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// partial clear offscreen
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auto offscreen = make_offscreen({2*kSize, 2*kSize});
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for (const auto& c : clears) {
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offscreen->clear(c.rect, c.color);
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}
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sfc->blitTexture(offscreen->readSurfaceView(),
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SkIRect::MakeSize({2*kSize, 2*kSize}),
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SkIPoint{2*kSize, 0});
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// full offscreen clears
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for (const auto& c : clears) {
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offscreen = make_offscreen(c.rect.size());
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offscreen->clear(SkIRect::MakeSize(c.rect.size()), c.color);
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sfc->blitTexture(offscreen->readSurfaceView(),
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SkIRect::MakeSize(offscreen->dimensions()),
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c.rect.topLeft() + SkIPoint{4*kSize, 0});
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}
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return DrawResult::kOk;
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}
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} // namespace skiagm
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